Ansible : Install2022/09/27

	Install Ansible which is the configuration management tool. Ansible does not require dedicated server/client program, it needs Ansible command and SSH only.
[1]	Start SSH service on all client hosts which you'd like to manage with Ansible.
[2]	Install Ansible.

root@dlp:~#

apt -y install ansible-core

root@dlp:~#

ansible --version

ansible [core 2.12.0]
  config file = None
  configured module search path = ['/root/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3/dist-packages/ansible
  ansible collection location = /root/.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/bin/ansible
  python version = 3.10.4 (main, Jun 29 2022, 12:14:53) [GCC 11.2.0]
  jinja version = 3.0.3
  libyaml = True

[3]	Define client hosts as management targets.

root@dlp:~#

mkdir /etc/ansible

root@dlp:~#

vi /etc/ansible/ansible.cfg

# create new : set parameters if need (SSH host key checking)

[defaults]
host_key_checking=False

root@dlp:~#

vi /etc/ansible/hosts

# create new
# set target hosts

10.0.0.50

# set targets as a group
# any group name

[target_servers]

# set targets per line

10.0.0.51
10.0.0.52

# confirm settings
# show all defined hosts

root@dlp:~#

ansible all --list-hosts

  hosts (3):
    10.0.0.50
    10.0.0.51
    10.0.0.52

# show specific hosts in a group

root@dlp:~#

ansible target_servers --list-hosts

  hosts (2):
    10.0.0.51
    10.0.0.52

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